A decade is 10 years anywhere, however people want to apply the term decade to a particular 10 year range is their problem.
As for Amiga accomplishments in the last 10 years, it only took about 2 years for me to run the hardware gamut from A1000 to A4000T and beyond, various nice third party expansions included. I think I've got the bug mostly out of my system and will probably stick with the few I have left.
